Have a 15-inch Early 2011 MBP with the 2.3 ghz i7. Have a Apple TV gen 3 hooked into a Denon AVR 2311 which is hooked up to a panasonic 55" GT 30. When I select airplay from the drop down menu, I get audio to the setup, but no video. Just a black screen that. eventually it will start to play the screen saver. The only way I get video would be if I was to play a video in iTunes, it then disables my display, showing an airplay symbol. Is there anything I am doing wrong or should try to get it to work right?